KR101783387B1 - Production method of safety pipe support and the safety pipe support - Google Patents

Abstract

The present invention relates to a method of manufacturing a safety pipe support and a safety pipe support capable of improving workability and safety by preventing an upper pipe from being separated from a lower pipe and by preventing the upper pipe from being inclined and firmly fixing the pipe to a lower pipe .
The method for manufacturing a safety pipe support according to the present invention is a method for manufacturing a safety pipe support comprising a lower pipe having a thread formed on an outer circumferential surface of the upper portion and a protrusion formed on an upper inner circumferential surface of the lower pipe along a circumference, (A) engaging a fastener for supporting a fastening pin, which is inserted through an upper pipe and a lower pipe, on an upper portion of the lower pipe, the fastener forming an internal thread on the inner circumferential surface; (b) inserting the lower end of the upper pipe into the upper portion of the lower pipe; (c) projecting the lower end of the upper pipe to the lower portion of the lower pipe; (d) expanding a part or all of the lower end of the upper pipe to form an enlarged latching part; And (e) sliding the upper pipe upward so that the lower end of the upper pipe is positioned within the lower pipe; And a control unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a safety pipe support,

The present invention relates to a method of manufacturing a safety pipe support and a safety pipe support capable of improving workability and safety by preventing an upper pipe from being separated from a lower pipe and by preventing the upper pipe from being inclined and firmly fixing the pipe to a lower pipe .

Recently, accidents caused by the collapse of construction materials are frequently occurring, and accidents occur frequently during the installation or disassembly of supports used as formwork for the reinforced concrete structures.

Conventionally, as one example of such a support, a pipe support in which an upper pipe is simply inserted in a lower pipe is widely used.

The pipe support often falls off during transportation, installation, or disassembly. In some cases, the upper pipe may cause a safety accident such as a damage to a structure supported by the upper part as well as the installation due to a fall of the upper pipe.

Therefore, since the upper pipe and the lower pipe are fastened to each other with the fixing pin, it is necessary to perform a transportation or installation work, resulting in poor workability. There is still a problem that the upper pipe and the lower pipe can be separated from each other when the fixing pin is released.

In the support shown in FIG. 1, a through hole is formed in the upper pipe 2 and a slot is formed in the lower pipe 1. The fixing nut 4 is fixed to the through hole of the upper pipe 2 and the elongated hole of the lower pipe 1 and then the adjustment nut 3 is rotated so that the upper pipe 2 is inserted into the lower pipe 1 To adjust the height of the support (Utility Model No. 20-0291531).

2, a conventional general support is provided between the inner circumferential surface of the lower pipe 1 and the outer circumferential surface of the upper pipe 2 so that the upper pipe 2 can freely move within the lower pipe 1. [ A clearance (S) is required.

However, due to the clearance S, the upper pipe 2 may be buckled in the lower pipe 1 to buckle the upper pipe 2.

Therefore, due to buckling concerns, the actual supporting support capacity is set to be much smaller than the allowable support force that the pipe sectional area can sustain.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a method of manufacturing a safety pipe support and a safety pipe support that can improve workability and safety by preventing an upper pipe from being separated from a lower pipe.

The present invention provides a method of manufacturing a safety pipe support and a safety pipe support in which an upper pipe inserted into a lower pipe can be firmly fixed without being tilted.

According to another aspect of the present invention, there is provided a safety pipe support comprising a lower pipe having a thread formed on an upper outer circumferential surface thereof, a lower pipe having an upper inner circumferential surface formed with a protrusion protruding along a circumference thereof, and an upper pipe inserted into an upper portion of the lower pipe (a) engaging a fastener formed on the inner circumferential surface of the lower pipe so as to support a fastening pin inserted through the upper pipe and the lower pipe, the fastener being formed on the inner circumferential surface; (b) inserting the lower end of the upper pipe into the upper portion of the lower pipe; (c) projecting the lower end of the upper pipe to the lower portion of the lower pipe; (d) inserting a front end of an expanding device at a lower end of the upper pipe to operate an expanding device, thereby expanding a part or all of a lower end of the upper pipe to form an enlarged engaging portion; And (e) sliding the upper pipe upward so that the lower end of the upper pipe is positioned within the lower pipe; A plurality of first support protrusions that are in close contact with an outer circumferential surface of the upper pipe to support the upper pipe, and a plurality of first support protrusions which are in close contact with the first support protrusions, A plurality of second support protrusions are disposed at positions spaced apart from the first support protrusions so as to be offset from each other in plan view.

delete

delete

According to another preferred embodiment of the present invention, the first support protrusion is formed so that two of the first support protrusions are opposed to each other, and the second support protrusion is formed such that the two support protrusions are opposed to each other in a direction perpendicular to the first support protrusion. A method of manufacturing a pipe support is provided.

According to another preferred embodiment of the present invention, there is provided a method of manufacturing a safety pipe support, wherein the ground support protrusions and the second support protrusions are elongated vertically.

According to another preferred embodiment of the present invention, there is provided a method of manufacturing a safety pipe support, wherein the first support protrusion and the second support protrusion are formed by pressing the outer side of the lower pipe to protrude from the inner side.

According to another preferred embodiment of the present invention, there is provided a safety pipe support manufactured by the manufacturing method of the safety pipe support, comprising: a lower pipe having a thread formed on an upper outer circumferential surface thereof and a protruding jaw protruding along a circumference on an upper inner circumferential surface; An upper pipe inserted into an upper portion of the lower pipe and having an enlarged fastening portion with a part of or a whole of a diameter expanded to be caught by the fastening protrusion at a lower end; A fixing pin penetrating through the lower pipe and the upper pipe; And a fastener supporting the lower portion of the fixing pin by being screwed to an upper portion of the lower pipe with an internal thread formed on the inner peripheral surface thereof; A plurality of first support protrusions that are in close contact with an outer circumferential surface of the upper pipe to support the upper pipe and a second support protrusion that is in contact with the first support protrusion at a position spaced apart from the first support protrusion by a predetermined distance, And a plurality of second support protrusions which are arranged alternately in plan view with the support protrusions are formed.

delete

delete

According to another preferred embodiment of the present invention, the first support protrusion is formed so that two of the first support protrusions are opposed to each other, and the second support protrusion is formed such that the two support protrusions are opposed to each other in a direction perpendicular to the first support protrusion. Provide pipe support.

According to another preferred embodiment of the present invention, there is provided a safety pipe support, wherein the ground support protrusion and the second support protrusion are elongated vertically.

According to another preferred embodiment of the present invention, the first support protrusion and the second support protrusion are formed to protrude from the inner side of the lower pipe by pressing the outer side of the lower pipe.

The present invention has the following effects.

First, the lower pipe and the upper pipe are not separated from each other because the enlarging latch formed at the lower end of the upper pipe is caught by the latching protrusion formed at the upper end of the lower pipe. Therefore, workability and safety are improved during transportation, installation or disassembly of the support.

Second, since the first and second support protrusions, which are vertically spaced apart from each other, firmly support the outer circumferential surface of the upper pipe, the upper pipe is stably fixed in the lower pipe without being tilted. Therefore, buckling of the upper pipe can be prevented.

Third, if the first and second support protrusions are disposed alternately in plan view, the upper pipe can be more firmly supported in various directions.

Fourth, by disposing the first and second support protrusions so as to be perpendicular to each other, buckling of the upper pipe can be prevented while facilitating the insertion of the upper pipe with deformation.

Fifth, when the first and second support protrusions are formed long in the vertical direction, the first and second support protrusions serve as hinge shafts, thereby preventing the rotation of the upper pipe and the buckling caused thereby.

Sixth, pressing the outer side of the lower pipe to form the first and second supporting protrusions facilitates the manufacture and is advantageous for the insertion of the upper pipe due to the elasticity of the first and second supporting protrusions.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.
2 is a side cross-sectional view showing a conventional support in general.
3 is a view showing each step of a method for manufacturing a safety pipe support according to the present invention.
4 is a cross-sectional view showing a coupling relationship between a lower pipe and an upper pipe;
5 is a view showing an embodiment of an expanding mechanism for forming an enlarged engaging portion;
6 is a perspective view showing a method of forming an enlarged latching portion;
Fig. 7 is a perspective view showing a split piece in which a projection is formed; Fig.
8 is a perspective view showing the safety pipe support of the present invention.
9 is a plan sectional view showing an embodiment of the safety pipe support of the present invention based on the position of the first support protrusion.
10 is a plan sectional view showing another embodiment of the safety pipe support of the present invention based on the position of the first support protrusion.
11 is an exploded view showing the inside of the lower pipe;
12 is a perspective view showing a safety pipe support according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

3 is a view showing each step of the manufacturing method of the safety pipe support according to the present invention, and Fig. 4 is a sectional view showing the coupling relation between the lower pipe and the upper pipe.

The method for manufacturing a safety pipe support according to the present invention comprises a lower pipe 1 having threads formed on its upper outer circumferential surface and formed with protrusions 13 protruding along a circumference at an upper inner circumferential surface thereof and a lower pipe 1 inserted into the upper portion of the lower pipe 1 2). ≪ / RTI >

3, the method for manufacturing a safety pipe support according to the present invention includes a lower pipe 1 having threads formed on an upper outer circumferential surface thereof and a latching protrusion 13 protruding along a circumference at an upper inner circumferential surface thereof, (A) an upper pipe (2) and a lower pipe (1) are connected to each other through an upper portion of the lower pipe (1) to form a safety pipe support Engaging an anchor (3) for supporting the anchor pin (4), the anchor hole (3) being formed on an inner peripheral surface thereof; (b) inserting and fitting the lower end of the upper pipe (2) into the upper portion of the lower pipe (1); (c) projecting the lower end of the upper pipe (2) to the lower portion of the lower pipe (1); (d) By inserting the front end of the expanding device 5 into the lower end of the upper pipe 2 to operate the expanding device 5, a part or the whole of the lower end of the upper pipe 2 is expanded to form the enlarging latching part 21 ); And (e) sliding the upper pipe (2) upward so that the lower end of the upper pipe (2) is located within the lower pipe (1); And a control unit.

In the step (a), the upper pipe 2 and the lower pipe 1 are connected to each other by a fixing pin 4, which is coupled to the upper part of the lower pipe 1. The fixing hole 3 is formed on the inner peripheral surface of the fixing pipe 3, (Fig. 3 (a)).

The lower pipe (1) is hollow and has a thread on the upper peripheral surface for engaging the fastener (3). At the upper end of the lower pipe 1 formed with threads, upper and lower long holes are formed so as to oppose each other, and then the upper pipe 2 and the lower pipe 1 are used to couple with the fixing pin 4.

In addition, the lower pipe 1 is formed with a latching protrusion 13 along the circumference on the upper inner circumferential surface.

The hooking jaw 13 is a portion of the lower pipe 1 to which the enlarged fastening portion 21 formed in the lower end of the upper pipe 2 is hooked. .

As shown in FIG. 3 (b), a support plate is formed on the upper end of the upper pipe 2 and the lower end of the lower pipe 1, respectively. Therefore, since the fastener 3 is difficult to fasten after the lower pipe 1 and the upper pipe 2 are coupled, the fastener 3 is coupled to the lower pipe 1 in advance in the step (a).

The upper pipe (2) is smaller than the inner diameter of the lower pipe (1) so that the upper pipe (2) can be inserted into the upper end of the lower pipe (1).

A plurality of fixing holes are formed vertically below the upper pipe 2.

The fixing hole is a portion to which the fixing pin 4 for fixing and supporting the upper pipe 2 to the lower pipe 1 is coupled and the fixing hole of the upper pipe 2 and the lower pipe 1 The product can be delivered while the fixing pin 4 is engaged so as to pass through the slot of the product 1). The upper pipe 2 is not separated from the lower pipe 1 during the transportation of the safety pipe support.

The upper pipe 2 and the lower pipe 1 can generally use steel pipes, but the present invention is not limited thereto.

The fixture 3 is for supporting the lower portion of the fixing pin 4, and the height of the upper pipe 2 can be adjusted by moving the fixing hole 3 up and down.

After the step (a), the lower end of the upper pipe 2 is inserted into the upper part of the lower pipe 1 (FIG. 3 (b) 3 (c)), and (d) a lower end of the upper pipe 2 is partially or entirely expanded to form an enlarged fastening portion 21 (Fig. 3 3 (d)).

In the step (d), the enlarged latching part 21 is formed by expanding part or all of the lower end of the upper pipe 2, and it can be formed using the hydraulic jack 55.

That is, the lower end of the upper pipe 2 is extended to connect the chuck coupled to the hydraulic jack 55 to the lower end of the upper pipe 2, and the oil pressure is applied to the hydraulic jack 55 to expand the chuck, (21) can be formed.

The enlarged latching part 21 may be enlarged in its entire circumference along the circumference of the upper pipe 2 or may be formed so that a plurality of protrusions 531 are spaced apart from each other.

Thereafter, (e) the upper pipe 2 is slid upward so that the lower end of the upper pipe 2 is located in the lower pipe 1.

4, since the enlarged latching portion 21 of the upper pipe 2 is caught by the latching protrusion 13 formed on the upper end of the lower pipe 1, the lower pipe 1 and the upper pipe 2 Can not fall out of each other. Therefore, the upper pipe 2 is not separated from the lower pipe 1 during the transportation, installation, or disassembly of the support, thereby improving workability and safety.

To this end, the maximum diameter of the enlarged latching portion 21 is not more than the inner diameter of the lower pipe 1, and is made larger than the inner diameter of the latching jaw 13.

Fig. 5 is a view showing an embodiment of an expanding mechanism for forming an enlarged holding portion, Fig. 6 is a perspective view showing a method of forming an enlarged holding portion, and Fig.

The enlargement locking portion 21 can be formed by using the expansion unit 5 shown in Fig.

The expansion unit 5 includes an expansion housing 52 and a hydraulic jack 55 in an outer housing 51 having a predetermined space formed therein.

The outer housing (51) supports the outside of the expansion housing (52) and fixes its position.

A split piece 53 protruding outward from the front end of the expansion housing 52 is provided in the expansion housing 52 and an insertion rod 54 is provided inside the split piece 53.

When the hydraulic jack 55 located at the rear of the expansion housing 52 pushes the insertion rod 54 forward to advance the split piece 53, the enlarged latching portion 21 can be formed.

6 (a), when the splitting piece 53 is inserted into the lower end of the upper pipe 2 and then the conical insertion rod 54 is pressed by the rear hydraulic jack 55 and advanced, The enlarged fastening portion 21 can be formed in the lower portion of the upper pipe 2 as the split piece 53 is opened to the outside as shown in (b) of FIG.

The cross section of the split piece 53 may be circular as shown in FIG. 5 or the like, and a plurality of protrusions 531 may be formed on the outer circumferential surface of the split piece 53 having a circular cross section as shown in FIG. In the latter case, each of the projections 531 can form a plurality of enlarged latching portions 21 discontinuously on the outer peripheral surface of the lower pipe 1.

8 is a perspective view showing the safety pipe support of the present invention.

8, before the step (a), a plurality of first supports (not shown), which are in close contact with the outer circumferential surface of the upper pipe 2 to support the upper pipe 2, A plurality of second support protrusions 12 may be formed at a position spaced apart from the protrusions 11 and the first support protrusions 11 by a predetermined distance.

A clearance S of a predetermined size exists between the upper pipe 2 and the lower pipe 1 for smooth insertion of the upper pipe 2. [

When the first and second support protrusions 11 and 12 are protruded from the inner circumferential surface of the lower pipe 1 so as to be vertically spaced apart from each other by a predetermined distance, It is possible to prevent the upper pipe 2 from tilting due to the clearance S between the inner circumferential surface of the lower pipe 1 and the outer circumferential surface of the upper pipe 2. [

A plurality of the first and second support protrusions 11 and 12 are formed in the horizontal direction.

When the first supporting protrusion 11 is formed in only one row, the upper pipe 2 is hinged by the first supporting protrusion 11 so that the upper pipe 2 can be rotated.

Therefore, the first and second support protrusions 11 and 12 are arranged in two rows in the upper and lower rows so that the upper pipe 2 is supported at two upper and lower points so as to support the upper pipe 2 without being tilted.

The first support protrusion 11 and the second support protrusion 12 may be formed by pressing the outer side of the lower pipe 1 to protrude from the inner side.

The first and second support protrusions 11 and 12 may be welded to the inside of the lower pipe 1. The first and second support protrusions 11 and 12 may be welded to each other in a narrow space in the lower pipe 1. However, Can be said to be difficult.

Therefore, the first and second support protrusions 11 and 12 may protrude into the lower pipe 1 by pressing the outer side of the lower pipe 1.

In the case where the first and second support protrusions 11 and 12 are formed by pressing the outer side of the lower pipe 1 as described above, since the first and second support protrusions 11 and 12 themselves have some elasticity, (2) It is also advantageous for insertion.

9 is a plan sectional view showing an embodiment of the safety pipe support of the present invention based on the position of the first support protrusion.

As shown in FIG. 9, the first support protrusion 11 and the second support protrusion 12 may be offset from each other in plan view.

9, the first and second support protrusions 11 and 12 may be formed by alternately arranging the first support protrusions 11 and the second support protrusions 12, Is more stable because it can support the upper pipe 2 in various directions.

delete

In the embodiment of Fig. 9, the first support protrusion 11 and the second support protrusion 12 are formed at three points on the plane, respectively.

The first support protrusions 11 are arranged at intervals of 120 degrees along the circumference of the lower pipe 1 so as to support the upper pipe 2 uniformly. Are arranged in the middle between the projecting portions (11).

FIG. 10 is a plan sectional view showing another embodiment of the safety pipe support of the present invention based on the position of the first supporting protrusion, and FIG. 11 is an exploded view showing the inside of the lower pipe.

10 and 11, two of the first support protrusions 11 are formed so as to face each other, and the second support protrusions 12 are formed in a direction perpendicular to the first support protrusions 11 Can be formed so as to face each other.

The support including the upper and lower pipes 1 and 2 may be deformed or deformed due to impacts or defective products during installation or disassembly.

In this case, since the upper pipe 2 is inserted asymmetrically into the lower pipe 1, the first supporting protrusion 11 or the second supporting protrusion 12 protrudes radially in several places on the inner circumferential surface of the lower pipe 1 It may be difficult to insert the upper pipe 2 into the lower pipe 1 due to the interference of a part of the first support protrusion 11 or the second support protrusion 12.

Therefore, when inserting the lower end of the upper pipe 2 into the lower pipe 1, the first supporting protrusion 11, through which the upper pipe 2 first passes, is inserted into the inner circumferential surface of the lower pipe 1, The upper pipe 2 can be rotated at an appropriate angle to pass through the first supporting protrusion 11 even if the upper pipe 2 is caught by the first supporting protrusion 11 due to deformation of the upper pipe 2 have.

The upper pipe 2 is rotated at an appropriate angle to interfere with the upper pipe 2 and the second supporting protrusion 12 at the second supporting protrusion 12 through which the upper pipe 2 passes next, The upper pipe 2 can be inserted into the lower pipe 1 without interference with the deformed portion of the lower pipe 1. [

That is, the number of the first and second support protrusions 11 and 12 is minimized to facilitate the insertion of the deformed upper pipe 2, while the first support protrusion 11 and the second support protrusion 12 are perpendicular to each other So that the upper pipe 2 is supported in a balanced manner at the upper and lower two points and the four points on the plane, thereby preventing the upper pipe 2 from buckling.

12 is a perspective view showing a safety pipe support according to another embodiment of the present invention.

As shown in FIG. 12, the paper support protrusions and the second support protrusions 12 may be elongated vertically.

10 and 11, when the first support protrusion 11 and the second support protrusion 12 are formed at two positions, the first support protrusion 11 or the second support protrusion 12 is short The first and second support protrusions 11 and 12 serve as hinge shafts so that the upper pipe 2 can rotate about the first and second support protrusions 11 and 12.

Accordingly, the first and second support protrusions 11 and 12 are formed to be long in the vertical direction so that the first and second support protrusions 11 and 12 stably support the upper pipe 2 over a relatively long vertical length region It is possible to prevent the upper pipe 2 from rotating due to the first and second support protrusions 11 and 12 and buckling.

Next, the safety pipe support of the present invention will be described.

A safety pipe support according to the present invention is manufactured by the above-described method of manufacturing a safety pipe support. The safety pipe support comprises: a lower pipe (1) formed with threads on an upper outer circumferential surface and a locking protrusion (13) protruding along a circumference on an upper inner circumferential surface; An upper pipe 2 inserted into an upper portion of the lower pipe 1 and having an enlarged fastening portion 21 formed at a lower end thereof with a part or all of a diameter expanded to be caught by the fastening protrusion 13; A fixing pin 4 penetrating through the lower pipe 1 and the upper pipe 2; And a fixture (3) for supporting the lower portion of the fixing pin (4) by being screwed to the upper portion of the lower pipe (1) with a female screw acid formed on the inner circumferential surface thereof. . ≪ / RTI >

The maximum diameter of the enlarged locking part 21 formed on the upper pipe 2 is equal to or smaller than the inner diameter of the lower pipe 1 so as to be insertable into the lower pipe 1, The inner diameter of the engaging jaw 13 is made larger than the inner diameter of the engaging jaw 13.

As described above, the upper pipe 2 and the lower pipe 1 may have through holes and long holes, respectively. The through holes of the upper pipe 2 and the lower pipe 1 may be formed with fixing pins 4 The fixture 3 supports the lower portion of the fixing pin 4 and the height of the upper pipe 2 can be adjusted by rotating the fixture 3 along the thread formed on the outer circumferential surface of the lower pipe 1. [

The role and features of each constitution of the safety pipe support constituted by the lower pipe 1, the upper pipe 2, the fixing pin 4 and the fixing member 3 are the same as the above-described method of manufacturing the safety pipe support.

8, the safety pipe support includes a plurality of first support protrusions 11 (see FIG. 8) which are in close contact with the outer circumferential surface of the upper pipe 2 and support the upper pipe 2, And a plurality of second support protrusions 12 may be formed at a position spaced apart from the first support protrusions 11 by a predetermined distance.

At this time, the first support protrusion 11 and the second support protrusion 12 may be formed by pressing the outer side of the lower pipe 1 to protrude from the inner side.

As shown in FIG. 9, the first support protrusion 11 and the second support protrusion 12 may be offset from each other in a plan view. As shown in FIGS. 10 and 11, the first support protrusion 11 may have two And the second support protrusions 12 can be formed so that the two support protrusions 12 are opposed to each other in a direction perpendicular to the first support protrusions 11. [

As shown in FIG. 12, the ground support protrusions and the second support protrusions 12 may be formed long up and down.

1: lower pipe 11: first supporting projection
12: second supporting protrusion 13:
2: upper pipe 21: enlarged fastening part
3: Fixture 4: Fixing pin
5: Expander 51: Outer housing
52: Expansion housing 53: Split piece
531: projection 54: insertion rod
55: Hydraulic Jack

Claims (12)

And a top pipe (2) inserted into the upper part of the lower pipe (1), wherein the lower pipe (1) is formed with threads on the upper outer circumferential surface and a protrusion (13) ≪ / RTI >
(a) a fixing pin (4) to be inserted through an upper pipe (2) and a lower pipe (1) at an upper portion of the lower pipe (1) ;
(b) inserting and fitting the lower end of the upper pipe (2) into the upper portion of the lower pipe (1);
(c) projecting the lower end of the upper pipe (2) to the lower portion of the lower pipe (1);
(d) By inserting the front end of the expanding device 5 into the lower end of the upper pipe 2 to operate the expanding device 5, a part or the whole of the lower end of the upper pipe 2 is expanded to form the enlarging latching part 21 ); And
(e) sliding the upper pipe (2) upward so that the lower end of the upper pipe (2) is located within the lower pipe (1); , ≪ / RTI >
A plurality of first support protrusions 11 which are in close contact with the outer circumferential surface of the upper pipe 2 and support the upper pipe 2 on the inner circumferential surface of the upper thread of the lower pipe 1 before the step (a) Wherein a plurality of second support protrusions (12) are formed at positions spaced apart from the support protrusions (11) at a predetermined interval below the first support protrusions (11) in plan view. Way.
delete delete The method of claim 1,
Wherein two of the first support protrusions (11) are formed so as to face each other, and the second support protrusions (12) are formed such that two of them are opposed to each other in a direction perpendicular to the first support protrusions How to make a pipe support.
5. The method of claim 4,
Wherein the first support protrusions and the second support protrusions are formed to be long in the vertical direction.
The method of claim 1,
Wherein the first support protrusion (11) and the second support protrusion (12) are formed to protrude from the inner side of the lower pipe (1).
A safety pipe support manufactured according to claim 1,
A lower pipe 1 in which a thread is formed on an upper outer circumferential surface and a hooking protrusion 13 protrudes along a circumference on an upper inner circumferential surface;
An upper pipe 2 inserted into an upper portion of the lower pipe 1 and having an enlarged fastening portion 21 formed at a lower end thereof with a part or all of a diameter expanded to be caught by the fastening protrusion 13;
A fixing pin 4 penetrating through the lower pipe 1 and the upper pipe 2; And
A fastener (3) for supporting a lower portion of the fixing pin (4) by being screwed to an upper portion of the lower pipe (1) with a female thread formed on the inner circumferential surface thereof; Respectively,
A plurality of first support protrusions 11 which are in close contact with an outer circumferential surface of the upper pipe 2 to support the upper pipe 2 and a plurality of first support protrusions 11, Wherein a plurality of second support protrusions (12) are formed at positions spaced apart from each other by a predetermined distance apart from the first support protrusions (11) in plan view.
delete delete 8. The method of claim 7,
Wherein two of the first support protrusions (11) are formed so as to face each other, and the second support protrusions (12) are formed such that two of them are opposed to each other in a direction perpendicular to the first support protrusions Pipe support.
11. The method of claim 10,
Wherein the first and second support protrusions (12, 12) are elongated vertically.
8. The method of claim 7,
Wherein the first support protrusion (11) and the second support protrusion (12) are formed so as to protrude from the inner side of the lower pipe (1).

Images